Commikuting-mixl



H. C. NEWHOUSE'.

COMMINUUNG MILL. mamon min June 21, ma.'

Patented Dec. 7, 1920.

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UNITED STATES PATENT OFFICE.

RAY C. NEWHOUSE, 0F WAUWATOSA., WISCQNSIN, ASSIGNOR T0 ALLISCHALMERS MANUFACTURING CUMPANY, 0F MILWAUKEE, WISCONSIN, .L CORPORATION 0F DELAWARE.

{To all who m t may (zo-neem Be it known that I, RAY C. NEwHoUsE, a citizen of the United States, residing at Wauwatosa, in the county of Milwaukee and State of Wisconsin, have invented a certain new and useful Improvement in Comminuting-Mills, of which the following is a specification. Y This invention relates generally to improvements inthe construction and operation of" mills for comminuting cement-making materials, coal, rock, ore and the like substances, and specifically to improvements in that type of comminuting mills known as combination mills.

An object of the invention is to provide a gomminuting mill of the combination type,

which is simple and compact "in construction land efficient 1n operation.

- VOne 0f the more specific objects of the in-v vention is to produce a'comblnation mill of jmaximum capacity by providing ample Screening area between the successive comminuting chambers.

Another specific object is to provide a division head between two successive chambers yof a combination mill, which will serve both aS holdbaok for the grinding bodies and ,s a discharge sizing screen for permitting Imaterial into a subsequent comminuting chamber.

A -further specific object is to provide various details for facilitating construction of mills of the combination type and for reA ducing to a minimum tbe cost of installation and nrmintenancet A ,clear conception of an embodiment of the invention maybe had by referring to the drawing accompanying and formiriga Specication of Letters Patent.

Patented Dec. 7, 1920.

Application filed June 2?, i918. Serial No. 245,107.

part of this specification in which like reference characters designate the same or similar parts in the various views.

Figure 1 is a diagrammatic central vertical section through a combination mill embodying a longitudinally adjustable division head for varying the volumetric capacities of the several chambers, the length of the fine grinding chamber having been reduced in order to facilitate disclosure of other details of construction.

Fig. 2 is an enlarged fragmentary central vertical section through a combination mill, taken adjacent the division head.

Fig. 3 is an enlarged transverse vertical section through a combinationimll the section being taken along the line HIL-III of Fig. 2 looking in the direction of the arrows.

Fig. 4 is an enlarged fragmentary central vertical section through a combination mill, the Section being taken along the line IV-V of Fig. 2 lookingl in the direction of the arrows.

The combination comminuting mill herein illustrated comprises in general a rotary drum o1' shell 1' havingr uniform diameter throughout its length, the shll being pro vided with feed and discharge end heads 2, 3 respectively, and having an adjustable partition or division head dividing the shell 1 into coarse and fine grinding chambers 5, 6 respectively. The mill is rotatably mounted in trunnion bearings 7, 8 located adjacent the end heads 2, 3 respectively, and is adapted to be rotated by means of power applied to the driving gear 9 in the usual manner.

The coarse grinding chamber 5 is ordinarily filled to substantially the center line of the shell 1, with relatively large comminuting bodies 10, usually balls, while the fine grinding or finishing chamber 6 is filled substantially to the center line of the shell 1, with relatively small comminuting bodies 11, usually of spherical, cylindrical or other form. e bodies 10,' 11 are preferably formed of iron` steel or other material adapted to withstand abrasion. The coarse ,grinding chamber -is supplied with relatively coarse material through a feeding trunnion 70 and delivers the material after having been partiall reduced by the bodies 10, through the com ined holdback and siz ing stlmn :mtl past thv tlivisinn pariitin, ttt thu liuialiiti; 'liantlitr Vt l't'ilnt hic-lt Llu, final prtalurt ia ltlirt-rtwl through a til#- -l ttgfe plakl tu 'rttfn :39. upttu vlfiatinp; mntIH huh iliwhargttlttI tnattrial linux lln'tttsgh a elihrhztrggv trtltntittn #StL tht` mili The tfnmltinvil lmltlliath :ttul ironing li vice ttlntprists :t rZing arti-til' harming a Support lot' tluwijdt-vnl grinding laiilics lll am] consisting' ttl' an amitslafq` lrii1 ut' paral` lvl teflitttgular liars Il vxtvzitliuif ltingiituv tliftallv ttl thel .alttjll l :ttul ttfruuuatiu iA at ilu* n all nl' plnltm' lh', ylli:1 lil'tx :ii'tl wit 't'tun` H05 (il thi' liars H ri-t upon :ttul :wel l|^v ttuhaltly wrurvtl tu tht' rast tltfuwnt 2H' ltr means ttf a segmental rvumtalilfn rig-taining ring iT. The npptisitttfxtrvutitiw ultluf haltsl Il wat uptm a ring 2l :intl artl rttaiiual in position hy tht pttriphtut nl' thtplatv 1H. The hars ll :ti-v prati-ralph' pm'tfll i-tpxal dislz'mrea apar: In' intuitif il tliataurt` pie-va located la'iu'ten thu atllfite-nt Ital* Mula :tml seturetl tu the barbl iti an)l tuitaltlv mauntfr. Thix spariti; nl' thv sttwn liars. ll i will that any :nati-rial pavingl tlwrvlittwttu iu sufficiently lints tu lit l'urthvr vlliiiiutllr rv` tlucetl hy ihr rtlatit'tl)Y antitll griutliny; bullies. ll in -tltP finishing vhautlwr l. 'lhasa lun-5 are furthtiiiutiru prt-ltralily l'nxnttil if wozu resisting.: itiattrial :Aulfh as trail alttl. amel may litt` foitiual la),v ita-wit' airing ur filter wlwv vulling liars til' viuninvrfhtl ltml .wilful intr pt'optr italy-tits, :tial yWaring thtx (hw {alu-e piwvs in llaA mula tltfrteif. Thi) vlement "JS intends along that annular space l'ttlwlun :hv writs cil' |mr ll :ttul thtA shell l unil is ptwyitlml with :t pluralityY of integral inwardly ltrnitvtitugy lwlitfal tn'twytt' rlis 15. the ittntr wl'tgts ol' whitflt :lirwtly engage the barbs Il :nul lortu supportsl'nr thc medial pm'titnm ttf these liars. lttc-h t-unvtytu ril) l5 has Oppttuitv mula atlistc'en fliamett'it'ally tipimaitt purtitins of thv shell l. thus rausing each ril tft enwagv Aultstittt 'tally mit half ofthe hara t4. 'he mitl of the elotuvnt 2S aifljritent thc` segmental ring l?. i# prnvitlutgl with :t rmiewalil@ ring liner 2T which held in plat-.- liy means nf the sume bolla 'i6 Whirl; aware the atjgments nf, the ring l? in place.

The division partition comprises a. pair During uns'smtl opxrutimi ul the` mill the -h0ll 1 is rotate-tl @utilising the grinding lmtlivs 'lll` ll to t'ascmlt m'tr asu-h other, thtl'tlatively mars# maturial living fttl infn the grinding vhantht-r .i lltrtiuglt the l'tetl trunniuu TU wht'rv it ib partially tetllttftl h thttuntliling' grinding lititlies l0. The umu-rial flaming through thu vltantber 5 eventually reaches lili@ discharge stteen adjavtzut. the

tlivimitiu heatl. nflwlifupuu the sullit'iently rel durf-tl material pasa through the spaces littwccti the sarl-lan hats Il :mtl tlriips into llt(` htriii'al rimmlws between thi` t'cinvtytrr rillh lf. .KS tht1 roalin 0f thv utll win limites, thc revolt-ing mnveyer ribs it urge' lill thel partially-reduced material toward and such size that they may be readily inserted 'deposit it upon the lifting vanes 4. The liftand removed through a manhole in the mill.

ing varies 4"'elevate thismaterial and even- By making the conveye ribs 15 of relatually Vdeliverit tothe cone element 19 which tively steep pitch asshown, rather than sub- 5 discharges the material into the finishing stantially parallel tothe mill axis, the mate- 70 'cham'hr 76.' As thematerial passes through rial delivered through the screen is urged the finishing' chamber 6, it is reduced to the rapidly into the path of the elevating venes deSiiedL-inene'ss by the bodies 11 in this 4, thereby enhancing the screening action.

chamber,4 the finalproduct passing from the As the ribs 15 coact directly with the adjaend of the chamber-6 through the discharge cent screen bars 14, these bars are eilectivelv 75 screen29 and into 'the'Ipath of the revolving supported to withstand the pressure of the elevating venes 125. he vanes 12 lift the charge of grinding bodies 10 thereagainst. .'lnf i' i al 'and discharge the same from` Due to the fact that the ribs v15 extend bethefiin` through the discharge trunnion 80. yond the front plate 18 and up to the plate 15 Ifitfis desired to vary the relative capa- 20,' the material is positively urgedr into the 80 city of the chambers `5, 6, `this ma be acspace adjacent the ends of the vanes 4. As complished byA adjusting the division head the successive ribs 15 terminate directly adlon'gltudinally of the shell 1, thereby varyjacent the ends of the successive vanes 4, the ing the relative lengths of the chambers 5, material delivered between each set of suc- 6. Adjustment o'f the division head may be cessive ribs 15, is discharged upon one of the 85 eii'ected by removing one or more annular elevating venes 4, thereby uniformly disseries of liners 22, 23 adjacent the division tributing the wear upon the liners 13. head and sliding the -head to any desired It should be understood that it is not de position alongthe shell 1. The liners may sired to be limited to the exact details of 25 then be prope reinserted and secured in construction herein shown and described, 90 the mill to fiyfmaintain the division head for obvious modifications may occur to perin its adjusted osition. B providing linsons skilled in the art.

ers of several iierent wi ths', any desired It is claimed and desired to secure by Let- 'fdegree of, adjustment of the division head ters Patent 30151:? be made. The char es of grinding l. In combination, a rotary shell, and a 95 ies 10, 11 must of course e varied to corhead dividing said shell into a pluralit of espondtpa given adjustment of the lengths chambers, said head comprising a wall, a of the chambers 5, 6. continuous annular screen extending longi- It will be notefd that by providing an antudinally of said shell and transversely of inular screen extending longitudinally of the said wall, and a conveyer rib between said 100 mill, and meansvfor rapidly removing the screen and said shell extending past said material passing through the screen, ample wall.` j

screening area is rovided between the two 2. In combination, a` rotary shell, and a chambers 5, 6. :he division head maybe head dividing, said shell into a plurality of '40 adjusted without affecting-the screening area chambers, said head comprising a wa l, a 105 ,since both the screen and the partitionplates continuous annular screenK extending longi- Vare movedjas a unit during adjustment of tudinallf of said shell and transversely of 'the division hfad. 4The formation of the said wa l, and a conveyer rib between said screen'as. an annular serieso bars 14, also screen and said shell, said rib directly en- 46 provides maximum ,screening area for miniraging a medial portion of said screen and 110 jmum le l1 of. bars, vand makes it possible forminga support therefor. ,y "'Ltoplaceteentire screening, device within i t. In combination, a rotary shell, and .i 4"shell 1 -dvf uniform diameter throughout its head dividing said shell into a plurality of length. `The bars 14 may bemade of suichambers, said head comprising a wa l, a 50 cient length to produce the required amount screen extending longitudinally of said shell 115 of screening area without materially aiiect and transversely of said wall, and a coning the 'mill capacity, and may be readily veyer rib between said screen and said shell, formed at minimum cost from commercial said rib terminating at approximately diastock. By utilizing the Screen as a holdmetrically opposite portions of said shell.

back as wellas `for the purpose ef sizing 4. Incom ination, a rotary shell, and a 120 material: the necessity of providing separate head dividing said shell into a plurality of devicesto perform these several functions is 4 chambers, said head comprising a wal, a eliminated and the cost of construction is lifting vane associated with one side of said thereby further reduced. The screen bars 14 Wall, a sei-ies of screen bars extending longi- 0 may be readily removed and re laced when tudinally of said shell and terminating at 125 A worn by merely removing the olts 16, 26. the other side of said wall, and a -conveyer The liner elements 13, 17, 27 and the plates "rib between said bars and said shell having 18, 20 may also be replaced when worn, withan end terminating at the side of said vane out removing the endz heads of the mill, as remote from said wall. these elements are preferably formed of 5. In combination, a rotary shell, and a 130 tween said walls, an annular Series of screen bars extendinar longitudinally 'f said shell and terminatingA at onil of said walls, and a heliral eonveyer rib between said bars and said shell. said rib dirertly engaging suitcessire bars of said series and terminating' at the other of said walls.

. ln combination. a rotary rylimlriral.

shell, and an adjustable head dividing' said,

shell into a plurality of chambers, said head vonrprising a pair of walls spaved apart longitudinally of said shell. a liftingr Vane in the spare between said walls` an annular series of screen barel spared from said Ishell and terminating at one ol' sa id Walls, and a ln'liral ionveyer ril) between said bars and said Shell, said rib dirertly engaging successive bars of said series the other of said walls.

8. In vonibination, a rotary shell forming' a `ronnninuliu; -j chamber, a wall at an end ol' :said chamber, a rontinuous annular srreen extending longitudinally ol said shell and terminatingr at said wall, and a vonveyer rib between said sri-een and said shell extending' past said wall.

l). ln combination, a rotary shell forming;l a eomminuting chamber, a wall at an end of said chamber-r a .screen extending longitudinally of said shell and transversely of said wall` and a ronreyer rib between said screen and said wall, said rib dirertly engaging said srreen and forming a support for n me dial portion olsaid screen.

lll. In rombination, a rotary shell forming a roniniinutingA chamber, a wall at an end of .said rhaniber, a screen extendingy longitndr nally of said shell and terminating' at said wall` and a Comi-yer rib between said screen and said wall, said rib directly engaging and supporting' a medial portion of said. screen and extending past said wall.

In testimony whereof the signature of the inventor is affixed hereto.

RAY U. NEW HOUSE.

and terminatin;Y at 

